[Coco] Update: os9gen on 128k coco3, rs323 pack

Steven Hirsch snhirsch at gmail.com
Sun Feb 15 17:01:55 EST 2009


On Sun, 15 Feb 2009, Michael Furman wrote:


>> That said, the sc6551 driver could really use an adoptive parent at this

>> point; someone to take it under their wings and really work to understand

>> it (and fix lingering issues).

>

> Looks like the driver has a good amount of comments. On first glance it

> looks like the Write function is supposed to check DCD and report an error if

> it's not active. I don't see where the DCD/DSR flags that it checks get

> updated anywhere... I need to print this sucker out and study it more

> closely.


Most Apple 2 serial adapters used the 6551 chip and ISTR it has some
notorious quirks. Disclaimer: It's been about 20 years since I've had my
feet in those bits, so the recollectors may be rusty.

Steve


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